Clarification system for dry-cleaning solvents



July 5, 1932. G. B. BooN 1,866,187

4 CLARIFICATION SYSTEM FOR DRY CLEANING SOLVENTS Original Filed April 27, 1928 J//O STI. 'z5

TSIIIIHSIS |I|||| PURIFIER (2u/STIC Patented July 5, 1932 UNrrEof'sTA'rEs PATENT GUTHRVIE B. :BooN,r. or AUSTIN, TEXAS, AssreatonY 'ro n. n.l srormny, rnc.

CLARIFICATION 'SYSTEM Fon DRY-CLEANING s oLyEN'rfs Application led April A2*?, 1928, SerialNo. 273,195'. Renewettlehruary 17, 1930.

This invention relates to new Vand. useful improvements in clarificationsystems.

One obj ect of the invention is to provide an improved clarifying system for purifying I detergent liquids, such as gasolene', or other solvents commonly used in'dry cleaning establishments and-which becomes dirty and away.

0 An important object of the invention is tol provide a systemv which may be installed above ground and'also one capable ot carrying out the process set forthA in my co-pending application filed January 16, 1928, Serial No. 247,021 which resulted. in Patent 1,711,829, granted May 7, 1929.

A further object of the invention is' topprovide containers into which liquids may be flowed so as to practically eliminate agitation, n thus preserving the stratification and contiguousrelation of ingredients within thesaid containers. f

Another object of the invention is to provide clarification tanks wherein'the liquids are introduced and removed from the upper portions of the tanks.v` Y ,1 A construction designed to carry out the invention will be vhereinafter described, to-

gether. with other features of theinvention.v

U lThe invention will be more readily understood from a reading of the following speci-V lication and by reference to the accompanying drawing, in which an example of the invention is shown and wherein:

'-Fig. 1 is a vertical sectional view of a system constructed in accordance with my invention, and Y f Y* Fig. 2 is a horizontal cross-sectional view taken on the line 2---2l of Fig. 1.

0 In the' drawing the numeral 10 designates anvupright tank having a conical bottom 11 provided with a 'suitable drain valve 12. The tank may be Lsupported on legs 10 or otherwise. A comparatively large column or tube 13 is mounted in thecenter of the tank with' 50 cap-15 and is supported by braces 16. The

proximity to the opposite wall, whereby the 4liquidis caused to flow down the inner wall of the tube is closed tank hasta conicalftop 17 aboverthe tube provided with a lid y18. f A vent pipe'15 extends from the cap up through; the lid. kBy removing the. lid thetank maybe lilledforsupplied with materials andliquids. A' caustic solu-.'u

placed'on Vtop .ofthe solution. i

Dirty gasolene or solvent 1s pumped or otherwise supplied through alpipe 19 entering the `tank just below the top 17 This pipeenters one side of the tube 13 and terminatesin'close otthe tube, thus splashing.` 4 v K Owingto the largesizezot` the tube, the solvent willl llow fromthe bottom through the notches 14 in gentle streams' and this will avoid stirringup the caustic solution and thev sediment in the vbottomll In order to re'1 plenish'the caustic solution, a `ller pipe 20 extends through the top 17 and down through' the layer B to the bottom 11. Thelower end of thisfpipe is closed and 4outlet slots 20 per# mit the freshfsolution to escape with af minimum agitation. f. 1 'Y The solvent escaping throughthe notches 4,' being of less specic gravity than `the-caustic solution A,will lowupward through said n solution Aand thence through the-layer `Bito Y reducingk agitation and the dirt and otherimpuritiesto" settle "in theV 85 conical bottom and these may be drawnoif through the valve 12. J [A second ltank 21 similar tothe tanklO isf provided. r This tank 21 has a conical bottomr 22, valve 22', central large tube 23notches 24:, cap 25, top 27l andlid 28,'allsubstantially thersame as the tank 10; and itmay also' be Y supported onlegs 21hor otherwise. ventv pipe 25 extends'from the cap "25 but -terini nates short of thelid.l 'j f I 95 A Vperforated drain `Vhead 29'lfisfcurved' around the tube 13 of the tank 10 yand. a pipe 3() entends therefromandleads through the i d V pipe 19. A pipe 31 extending into the tank 21 is connected with Vthe pipe 30 by a union 32. The pipe 31 extends across the tube 23 and discharges in close proximity to the opposite inner wall of the tube, thus delivering the fluid without agitation.

The drain head 29 being in the .top portionof the tankl() will maintain* a level. of4 solvent flush` with its perforations. ment providesa goodly body of solvent in the tank so that streams VofV solvent flowingupward through thelayer B. are giventime to settle before entering said head.

Water isfintroduced finto the tank 21 through a vertical supply pipe 33 similar to the: pipe a-nd which has discharge. slots: 33. at; its closed bottom. The tankisfllled with waterv or liquid. suitable forl the purposeto the linezC, About mid-heightof the tank and above Vthe water level, a'. screenv basket' 34 isv secured in theV tank 21 and surrounds the tube.

` Above'. the baskety and inthe upper portion of the. tank is mountedfaperforated drain head 34e curved. around the tube and. having. aV dis- 25? charge pipe 35 leading out through the. side walli of the tank; The head 34:.; is at a. lower level; than thefhead129..

The soljventdischargedbythe pipe 31 flows Y downthe tube. 23 and escapes-through. the

301 notches 24,1into the bottom 22 of the tank 21.

Upon passingupward throughthe water, the

solvent. is given a: bath orrinse.. The solvent n will, of course, float on the water and upon passing upward'it comesincontact with cal- Vlciu-m chloride crystals E'co-ntained in the basket. 34. Thismaterial. will' extract the4 wa- Vtenfrom the'solvent. and will also remove the traces. of.. lye andv other impurities from thesolvent.` After passing through the basket, 4f the puri-fied andclaried solvent isI drained off throughfthe head34 and'v pipe 35,.from Whichit may be conducted to its place; of use. It. Will be: seenY thatv the; moisture. absorbed by the calcium chloride will drainr back intoV the-different parts, as well. as'pmodications and 'Valterations, may be. made. within the scope of the appended claims.

VWhat Ijclaim,isV-: V V Y V. Y- 1. Inaclarifyingsystem for dry cleaning 'i solvents,a tank havinga' chamber a-t'itslower portion adapted to Ycontain a liquid, afvertica-l 65 gravityfeed. tube supported in .the'tank with This arrange- V its lower end in said chamber disposed t o discharge toward the tank wall,Va supply pipe of substantially less diameter than the tube eX- tending into the upper portion thereof, and a discharge pipe from the upper portion of the tank.

2. A tankV as dened. by claim 1, in which the: upper end of the tube is closed and provided with a vent to atmosphere.

3. A tank as defined by claim l, in which the supply pipe discharges against the inner face of the tube wall.V V

a. A tank as defined' by claim 1, in which the discharge pipe is provided with a head eX- tending into the upper portion of the tank.

.5; A tank as deiined'by claim 1, in which a second supply pipe extends downward from the cover of.thetank.into theliquid chamber thereof. V L

6. Ina clarifying system for dry cleaning solvents, aZ rinsing tank having a chamber at its base a'dapted'to contain a.1iquid,Va. feed pipeat the upper portion of the tank, a gravity feed tube into which said pipe dischargesand of.I greater diameter than the pipe, said tube discharging at thev base ofV said chamber, a reticulated container surrounding the tube; above saidV chamber andy adapted to receive aY dehydrating and neutralizing body through which the washed solvent passes, and. a dis-- charge pipe at the upper portion of said rins ing'ta'nk. A

7. The construction defined by claim6 in; combination with a second supply pipe eX- tending downward. from the cover and. througl'r thel container' todischarge into the. chamber. V f V S. The construction defined by claim 6, in which the'liquid chamber of the rinsing tank isof conical configuration. surrounding the. discharge from the feed tube. V

I9. The construction defined by claim 6, in which the discharge from the clarifying tank.

Vis against a wall of thefeedtube of the rinsing tank', and said tube is providedwith a 11G vent atits upper end.

1Q. In a clarifying system for dry cleaning. Y solvents, a rinsing tank having a conical V V chamber at its base adapted V to contain a liquida c'entral'gravity `feed tube supported by 115 said base in spaced relation thereto at its open lower end, a feed pipe of less diameter than said tube discharging toward thev upper portion `of the wall thereof, means between the tubeand. tank for supporting solid material 129 abovel said chamber, and a discharge Vfrom the rinsing tank above said supporting means.Y 11'. Ank apparatus of the character de'- scribedv including tank having a downn wardlytaper'ed end, atubular conductor ex- 125 tending downwardly and concentrically dis` posed in said-tank-Vto dischargeV against said tapered lower end, means to circulate a sol- V vent liquid through said apparatus includ-` ingfaninlet` and an outlet, said conductor 139:

being of a diameter whereby the liquid will How therethrough substantially slower than the rate at which it enters said tube.

12. In a clarifying system for dry cleaning solvents, a tank adapted to contain liquid, a straight vertical tube supported in said tank and open at its lower end to discharge into the base of said tank, a feed pipe of less diameter than said tube discharging into the upper end thereof, and an outlet from said tank.

13. In a clarifying system an inlet, a tank wherein a fluid is subjected to engagement with a cleansing solution disposed ad jacent the base of said tank, a tube concentrically arranged in said tank to form an annular chamber to discharge adjacent the base of said tank and below` the surface of the cleansing solution, said tube being of a diameter such that the flow therethrough will be less than the rate lof flow `of the incoming Huid but, greater than the rate of flow in the annular chamber formed by said tube and said tank, whereby the velocity of the fluid discharged from said tube into-said tank does not turbulate the cleansing solution, and an outlet from said tank.

14. An apparatus of the character described including a tank, a tubular conductor extending downwardly and concentrically disposed in said tankto discharge against the lower end of said tank, means to circulate solvent liquid through said apparatus, said conductor being of a diameter whereby the liquid will ow therethrough substan-V tially slower than the rate at which it enters said conductor.

15. In an apparatus of the character described including a tank, a gravity iow feed inlet adjacent the top thereof. an unobstructed vertical tube in said tank connected to said inlet to conduct the Huid to a point adjacent the base of said tank, said tube being of a diameter greater than said inlet so vthat the gravity flow discharge therefrom will be slow as comparedto the inlet, and a discharge pipe from said tank of a capacity substantially less than that of said tube.

16. In a clarifying system for dry cleaning a solvent, a tank vadapted to contain a cleansing solution inthe base thereof, an inlet pipe for the solvent, means connected to said pipe to receive a quantity of solventA therefrom, said means being of greatercapacity than said feed pipe whereby the solvent will be introduced below thev level of the cleansing solution at a velocity which will not displace the solution, and an outlet for said tank. y

In testimony whereof I aix my signature.

p GUTHRIE B.V BOON. 

